React-Router如何进行页面权限管理的方法

export default (store) => {
 const history = syncHistoryWithStore(hashHistory, store);
 return (
  <Router history={history}>
   <Route path="/" component={AppRoot} >
    <IndexRoute component={IndexPage} />
    <Route path="photo" component={PhotoPage} />
    <Route path="info" component={InfoPage} />
   </Route>
   {/* <Redirect path="*" to="/error" /> */}
  </Router>
 )
}

const authRequired = (nextState, replace) => {
  // Now you can access the store object here.
  const state = store.getState();  
  if (state.admin != 1) {
   replace('/');
  }
 };

<Route path="photo" component={PhotoPage} onEnter={authRequired} />

function loadData(nextState, replace, callback) {
  let unsubscribe;
  function onStateChanged() {
   const state = store.getState();
   if (state.admin) {
    unsubscribe();
    callback();
   }
  }
  unsubscribe = store.subscribe(onStateChanged);
  store.dispatch(actions.queryAdmin());
 }

<Router history={history}>
   <Route path="/" component={AppRoot} onEnter={loadData}>
    <IndexRoute component={IndexPage} />
    <Route path="photo" component={PhotoPage} onEnter={authRequired} />
    <Route path="info" component={InfoPage} />
   </Route>  
  </Router>